Astrophysics Seminar: What can we learn from the evolution of galaxy sizes?

Kalina Nedkova (Johns Hopkins University)
- David Rittenhouse Laboratory, 4E19

Galaxies have grown significantly in size since the early Universe. While quiescent galaxies grow primarily through galaxy mergers, star-forming galaxies grow by accreting gas from their surroundings and forming new…



Condensed and Living Matter Seminar: Search and Response Mechanisms in Active Soft Matter

Alireza Abbaspourrad (Cornell University)
- David Rittenhouse Laboratory A8

Efficient migration in complex environments is crucial for biological systems that search for a target across various length scales. Microswimmers’ motion, such as bacterial chemotaxis in complex environments, and…



High Energy Theory Seminar: Gravitational atoms and black hole binaries

G.M. Tomaselli (IAS at Princeton University)
- David Rittenhouse Laboratory, 3W2

Superradiant instabilities may create clouds of ultralight bosons around rotating black holes, forming so-called "gravitational atoms". In this talk, I will review a series of papers that study the effects of a…



Colloquium: Light, Quantum and Energy

Liang Wu (University of Pennsylvania)
- David Rittenhouse Laboratory, A8

The conventional device to convert light to electrical current uses two different kinds of doped silicon merged together known as pn junction or heterostructures. The current only flows one way in the pn junction due…



High Energy Theory Seminar: Candidate de Sitter Vacua

Liam McAllister (Cornell)
- David Rittenhouse Laboratory, 3W2

I will present Calabi-Yau orientifold flux compactifications of type IIB string theory that yield, at leading order in the string loop and sigma model expansions, de Sitter vacua of the form envisioned by Kachru,…



Dissertation Defense: "Design Principles for Efficient Transport in Physical Networks"

Georgios Gounaris
- David Rittenhouse Laboratory, 2N3



Condensed and Living Matter Seminar: Van der Waals magnets and antiferromagnets interacting with electron spins

Dan Ralph (Cornell University)
- David Rittenhouse Laboratory A8

This talk will discuss two projects.  The first concerns topological insulator/magnet samples made by mechanical stacking of exfoliated van der Waals flakes.  The proximity interaction of the…



Astrophysics Seminar: Mapping Cosmic Star Formation with the CO Mapping Array Project

Patrick Breysse (NYU)
- David Rittenhouse Laboratory, 4E19

I will discuss the results of the second observing season of the CO Mapping Array Project (COMAP).  COMAP is a line intensity mapping experiment seeking to probe the cosmic star formation history by mapping the 115…



High Energy Theory Seminar: Apparent Fine Tunings for Field Theories with Broken Space-Time Symmetries

Alberto Nicolis (Columbia University)
- David Rittenhouse Laboratory, 3W2

I will exhibit a class of effective field theories that have hierarchically small Wilson coefficients for operators that are not protected by symmetries but are not finely tuned. These theories possess bounded target…



Profs & Pints Philadelphia: Finding the Cosmic Puzzle's Missing Pieces

Mark Trodden (UPenn)
- Black Squirrel Club 1049 Sarah St Philadelphia, PA 19125

Profs and Pints Philadelphia presents: “Finding the Cosmic Puzzle’s Missing Pieces,” a look at how the fields of astronomy and subatomic physics are working in tandem to shed light on the darkest parts of the…